Pulverizing or grinding mill.



P ATENTED APR. 9, 1907.

' JIW. FULLER, JR. PULVERIZING OR GRINDING MILL.

APPLICATION FILED JAN. 26, 1906.

3 SHEETSSHEET 1.

W .m Z

3 SHEETS-SHEBT 2.

No. 849;'780. PATENTED APR. 9, 1907.

J. w. FULLER; JR; PULVBRIZI'NG 0R GRINDING MILL.

APPLICATION FILED JAIL 26, 1906.

, PATENTED APRLQ, 1907. J. W. FULLER, JR. PULVBRIZ ING OR GRINDING MILL.

rrnrrnn snares Pagans FFiGE.

JAMES w. FULLER, 3a., or CATASAUQUA, PENNSYLVANIA.

PULVEFZEZENG OR GRlNDlNG MILL Specification of Letters Patent.

l'atented. April 9,1907. I

' Application filed JanuaryZB, 1906. Serial No. 297,925.

To all whom it may concern.-

Be it known that I, JAMES W. FULLER, Jr., a citizen of the United States, residing at q Oatasauqua, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Pulverizing or Grinding Mills, of which the following is a specification.

My invention has relation to a pulverizing or grinding mill of the ty e wherein the materials are ground by ba s or rolls traveling.

within an annulus or ring; and in such connection it relates more particularly to means for holding the rir: in proper position and for revolving the a, .lls within the ring and to means connected with the ball-carrier to elevate and conduct material into the path of the ring and balls.

The principal objects of'my invention are, first, to provide a ring or annulus of a pulver izing or grinding mill at its upper and lower surfaces with a rib or tongue and at its outer surface or rim with projections to hold the with the ring, passage-ways for material which permit of ready entrance of the same between the pushers and the. ring; third, to provide the carrier for the balls at the outer periphery with inclined passage-ways and with {projecting sweepers or scoops forming one of the surfaces of the passageways to elevate niaterial'accumulating in the bottom of the casing and to elevate and conduct the same into the path of the ballsand interior or wearing surface of the ring, and, fourth, to chill or harden the portions of the carrier supporting the balls, as wellas the faces of the pushers engaging the same and the portion of the ring engaged by the balls, to materially prolong the usefulness of the same and to economize greatly as to repairs of such parts of the mill subject to tonstant wear.

The nature and scope of my present invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in whioh- Figure 1 is a view illustrating, partly in I ing material and conducting the vertical central section and partly in elevation, a pulverizing 'or rinding mill and also showing the manner of centering the ring in the mill, the tapering .of the pushers to per 6o mit of the unobstructed entrance of mate rial between the pushers and ring, and the carrier for the balls having passage-ways,.and scoops or sweepers-arranged therein for raisthe path of the 'balls and wearing-surface of the ring, all embodying characteristic-main features of my present ii ention. Fig. 2 is a view, partly in horizontal section and' partly in'top or plan, and the means for preventing rotation thereof, the carrierfor the balls, the means for same into illustrating the ring supporting the reversible pushers and theparticular outline or shape of the same at their material to the ring, and the' -rearwardlydn clined bearing-surfacesgior the balls to hold. the same in a certain defined position with respect to the ring. Fig. 3 is a detail view,

free ends to facilitate the entrance of enlarged, illustrating in perspectives, pusher 8o detached from the holder thereof. Fig. 4 is a view, partly in horizontal section and artly in top or plan, illustrating the carrier or the balls, the 'passageewaysarranged in the perimeter of the carrier, and the scoops or 8 5 sweepers arranged in the passageways; and

Fig; 5'- illustrates, partly in vertical section and partly in elevation, the central portion of the mill. 2

Referring to the drawings, with reference 9 0 to Fig. 1, a represents the bed-plate of the pulverizing or grinding mill, to which is se-'o cured a standard a, supporting the bottom b of a sectional casing b. Upon thep'asing Z1 is arranged a frame or baslgett, adapted to 5 support screens b and; a casing or shell 1?. The frame orbasket b is closed at its upper end by a ring 5 and a plate b removably secured thereto, and upon this plate is arranged a bearing 6 for the driving-shaft 0, ar- 10o ranged vertically in the mill. The shaft 0 passes through the casing b, and between the same and bed-plate a is arranged a pulley c, by means of which the shaft 0 is drivenfroin any suitable source of power. Within the casing b, traversed by the shaft 0, is arranged an annulus or grinding-ring (Z, and the preferred manner of holding and centering the same to the casing 17, as well as to the basket I) tongues 'd and d respectively, projecting from the upper and lower surfaces thereof (Not shown.) 10 5 consists of annular ribsor 11o and engaging grooves or depressions d and (Z arranged, respectively, in the casing b and base of the basket I). as shown in Figs. 1 and to prevent turning of the ring- (1 in the casmg b.

To the shaft 0 by means of an extension 6 is suitably secured a platform or carrier e, having projections 6 serving as supports for grinding-ballsf. As shown in Fig. 2, the extension e of the carrier (2 is preferably square in cross-section, and to the same is removably secured a spider or radiating arms g for the reception and su )port of pushers h, between which the grimling-ballsf are arranged andare revolved and held by the same in position on the projections e of the carrier 0. The sleeve 9 of the radial arms g, surround.-

ing the extensions e of the carrier e, is pro- I and balls f.

vided with outwardly and upwardly flaring arms 9, serving to hold and to retain the balls f in position upon the projections e of the carrier 6. Each of the retainer-arms g is provided with an extension g, to which is secured an annular body consisting of superposed rings 71 and 1', connected with each other by stri s i To each of the rings i and 't" are suitab y secured a series of obliquelyarrangedv wings or blades and 7c, which when rotated tend to force material of a sullicient degree of fineness entering the mill through the opening I) in the plate directly through t e screens 6 and at the same time elevates finely-ground material and also discharges the same through the screens 1). Coarse and lumpy material, however, is permitted to descend in the mill and to be con ducted either by the lower series of wings Zr and their flanges k directly into the path of the balls f or to be drawn toward the same by the action of the wings k and Ir revolving rapidly in proximity to the screens I)". The central portion of the basket b is lef t free and is defined by the rings and i, leaving the material to freely descend therein and to be distributed therefrom by the wings k and It, the finer material through the screens lf and the coarser and lumpy material to the ring (Z In order to permit of the free and unobstructed entrance of the material to be ground between the pushers 7L- and the ring (1, which pushers occupy a comparatively large space in the casing 7), the same are shaped or constructed in preferably the following manner:

As shown in Figs. 2 and 3, each of the push.- ers h consists of a segmental body having an opening it, through which one of the radial arms 9 passes, and is also provided with an opefiing h for the receptionof a locking-pin h ly means of. which the pusher is removably secured to the arm {1. Each of the radial faces of the pusher h is provided In addition. thereto the ring (1 at its outer with a depression h, concave in cross-section and extending to a rearwardly-tapering portion h, terminating in a straigl'it contracted portion. The depressions it serve as contacting or bearing surfaces for the grindingballsf, and'the tapering portion h" as well as the contracted portion k serve to limit the movement of the balls f toward the shaft 0 when the mill is brought to a standstill. The outer vertical face 71, of each of the pushers h is curvedin a radius determined from the central axis of the shaft 0 and is held by a pin 71 at all points an equal or defined distance from the interior surface of the ring (Z, at which distance the outer face it is held substantially in alinement with the portions (l"'of the inner surface of the ring (Z, as will be readily understood from Figs. 1 and 2. In addition thereto each of the pushers h at their upper and lower horizontal sides is provided with inclined portions h", which inclinedportions, in conjunction with the respective ends of the curved portion cl" of the ring (1, form inclined passage-ways Z and Z, through which the material can readily pass and is directly conducted to the curved wearing portion of the ring (Z, which is the portion against which the ballsf abut. All the coarse and lumpy material descending in the mill and striking the upper inclined portions 71 of the pushers I:- will thus be permitted to freely enter the space between the ring (I and pushers through the passage Z, while the portions thereof reaching the bottom I) of the casing b, whicho are raised from the same, are permitted to freely pass through the passage Z to the ring and pushers /1V and ballsf, as shown in Fig. 1. The preferred means for raising or elevating the material from the bottom I)" of the casing b and for conducting the same in an oblique direction into the path of the ballsf and the inner surface (1* of the grinding-ring (Z are as follows As shown in Figs. 4 and 5, the carrier (2 for the balls f is provided at its perimeter with inclined cuts or passage-ways which are arranged, preferably, directly below the supports c" for the ballsf and extend through the lower portion of the same to form long guiding-surfaccs e. To a projection. a of the carrier 6, arranged adjacent to each of the passage-ways c, is removably secured and held in an oblique position by the same a scoop or sweeper m, projecting with its free end m below the carrier (4 and terminating a certain distance above the bottom 11"0f the casing 6. During therapid rotation of the carrier 12 the scoops or sweepers in will continually raise the material accumulated on the bottom I)" and, in conjui'lction with the inclined surface a of the passage-way a, acting a ballleplate, will force the material in an obliq1ic"di-' rcction upward and through the passageway Z formed by the lower inclined portion It" of the pushers 1L and the lower projecting I portion 1 ing-surface d of the ring (1, as will be readily. understood from Fig ring tending over of the ring (1 and the end of the curved portion (1 directly into the path of thegrinding-balls f and the interior or grind- 5 of the'drawings. In order to prolong the used the ring d,

pushers h, and carrier a, made of cast-iron, the I grinding-ring having a curved grinding-surace arranged between straight portions thereof, -'means for supporting said ring,-

pushers, each having 'anunclined sur'fa'ce exthe upper and lower faces to permit of free entrance of matter between 1 said pushers and ring, means for supporting said pushers andactuating ,the same within said rin grinding-balls arranged between saidpu ers and a'carrier having projections in 1 ring, pushers each-havmg an inc extending over supporting said balls and provided with slots in the periphery extending through said projections to permit of the formation of long guiding-surfaces therein.

2. In a mill of the a casing for supporting said ined surface the entire upper and lower faces thereof tofpermit of the free entrance of matter between said pushers and r'ng, means for supporting said pushers and for actuating the samewithtj -said, riiig', grinding-balls archaracte r described, a.

ranged between said pushers, a carrier having projections supporting said balls and provided with slots in the outer periphery extending through said projections to permit of the formation of long guiding-surfaces therein, means connected with said carrier and lo cated in the slotted portions thereof and projecting' below the carrier, said means adapted when actuated by said carrier to elevate matter resting on the bottom of said casing and conduct the same against the inclined surface of the lower faces of said pushersand by the same to said ring.

3. In a mill of the character described; a casing, a grinding-ring supported thereby, pushers arranged within sai ring, each having inclined surfaces at their outer ends and forming in conjunction with said ring passageways for matter adapted toenter the I ring from opposite sides thereof, grindingballs arranged between said ada ted to be rotated by the same within sai ring, a carrier ada ted to support said balls having slots in-t scoops connected 'with said carrier and projecting below the same, said scoops when actuated by said carrier adapted to elevate matter resting on the bottom of said casing and conduct the same through said the grinding-ring. v

In testimony whereof I have hereunto set mysignature in the presence of two sub scribing witnesses. I

JAMES W. FULLER, JR.

Witnesses: I

ALEX. N. ULRICH, Bnssm MCMAHON.

slots to' pushers ande outer periphery, 

